Results 81 to 90 of about 439,885 (243)
Environmental Enhancement of DM Haloes [PDF]
, 2004 We study the properties of dark matter haloes of a LCDM model in different environments. Using the distance of the 5th nearest neighbour as an environmental density indicator, we show that haloes in a high density environment are more massive, richer, have larger radii and larger velocity dispersions than haloes in a low density environment.
arxiv +1 more source
Electric structure of shallow D-wave states in Halo EFT
, 2019 We compute the electric form factors of one-neutron halo nuclei with shallow D-wave states up to next-to-leading order and the E2 transition from the S-wave to the D-wave state up to leading order in Halo Effective Field Theory (Halo EFT).
Braun, J. +3 more
core +1 more source
Haloes gone MAD★: The Halo-Finder Comparison Project [PDF]
Monthly Notices of the Royal Astronomical Society, 2011 27 interesting pages, 20 beautiful figures, and 4 informative tables accepted for publication in MNRAS. The high-resolution version of the paper as well as all the test cases and analysis can be found at the web site http://popia.ft.uam.es ...
Steffen R. Knollmann +39 more
openaire +8 more sources
Nature, 1871 AT 20 minutes to 6 P.M. on Saturday 10th inst., I witnessed a natural phenomenon which I understand is very unusual. It was a portion of a halo around the zenith. Take the zenith as centre, and with a radius of 20° describe an arc of 120° parallel to the horizon, and having 60° on each side of due west. This gives the position in the heavens, as nearly
openaire +2 more sources
Mass distribution and accretion of sub-halos [PDF]
arXiv, 2009 We use the "Millennium Simulation" to study the mass function of accreted sub-halos during merger events in the dark halo assembly history. Our study includes three kinds of sub-halo mergers: (1) mergers that happen to the main progenitor of dark halos; (2) mergers that happen on the entire merging history tree of dark halos; and (3) mergers that leave
arxiv
Cosmic Web Type Dependence of Halo Clustering [PDF]
arXiv, 2016 We use the Millennium simulation to show that halo clustering varies significantly with cosmic web type. Halos are classified as node, filament, sheet and void halos based on the eigenvalue decomposition of the velocity shear tensor. The velocity field is sampled by the peculiar velocities of a fixed number of neighbouring halos and spatial derivatives
arxiv
Einasto profile as the halo model solution coupled to the depletion radius [PDF]
2025, ApJ, 979, 55We constrain the halo profiles outside the halo boundaries by solving for the matching profiles required by the halo model. In the halo model framework, the matter distribution in the universe can be decomposed into the spatial distribution of halos convolved with their internal structures. This leads to a set of linear equations in Fourier space which
arxiv +1 more source
, 2007 We present sensitive ISO $\lambda 6.7 \mu$m observations of the edge-on galaxy, NGC 5529, finding an extensive MIR halo around NGC 5529. The emission is dominated by PAHs in this band. The PAH halo has an exponential scale height of 3.7 kpc but can still
Allain +62 more
core +1 more source